Authors: A.A. Ryabinin

Title of the article: Method for determining the flash point of motor oils

Year: 2022, Issue: 5, Pages: 55-61

Branch of knowledge: 05.02.11 Methods of control and diagnostics in mechanical engineering

Index UDK: 519.248

DOI: 10.26730/1999-4125-2022-5-55-61

Abstract: The article presents the results of testing a new method for determining the flash point of engine oil, which excludes the ignition of a vapor-air mixture. The method involves thermostating the lubricant at three temperatures of 160, 170 and 180°C, recording the mass of evaporated oil during thermostatting, determining the amount of thermal energy absorbed by the mass of evaporated oil as the product of temperature and time and the mass of evaporated oil, calculating the decimal logarithm of thermal energy, by the absorbed mass of the evaporated oil and plotting the dependences of the decimal logarithm of the thermal energy absorbed by the mass of the evaporated oil on the decimal logarithm of the time and thermostating temperature, by which the flash point is determined at a certain constant value of the decimal logarithm of the thermal energy. This work establishes the possibilities for determining the flash point of engine oil without igniting the vapor-air mixture based on the description of thermostating processes, the change in the mass of the evaporated product during thermostating, determining the decimal logarithm of the previously described dependencies, which are dependent on time and temperature, which in turn are analyzed using a linear equation by which the flash point of engine oil is determined mathematically.

Key words: thermal destruction volatility thermal energy absorbed by the lubricant thermostating optical density the beginning of the destruction processes

Receiving date: 12.09.2022

Approval date: 01.10.2022

Publication date: 18.10.2022

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